class Game
  
  def initialize
    @current_down      = "1st"
    @first_downs_to_go = 5
  end
  
  def to_go
    @first_downs_to_go
  end
  
  def first_down
    @current_down = "1st"
  end
  
  def current_down
    @current_down
  end
  
  def find_down(string)
    if string == "1st"
      @current_down = "2nd" 
    elsif string == "2nd"
      @current_down = "3rd"
    elsif string == "3rd"
      @current_down = "4th"
    end
  end
    
  def increment_down(string)
    if string == "1st"
      @current_down = "2nd" 
    elsif string == "2nd"
      @current_down = "3rd"
    elsif string == "3rd"
      @current_down = "4th"
    end
  end
  
  def decrement_first_downs
    @first_downs_to_go -= 1
  end
  
  def increment_first_downs
    @first_downs_to_go += 1
  end
  
end  